Red Onion, Raw

USDA composition for red onion, raw, and what a Nutrition Facts panel would print at the serving you choose — rounded by the FDA’s own declaration rules.

Also calledpurple onionred globe onionItalian onionBermuda red onioncebolla rojacebolla moradalal pyazpyaz
Reference basis
Label serving

Switch to 100 g to see the raw published values with no rounding applied.

Calories
90
Protein
2 g
Total fat
0 g
Sodium
0 mg
Nutrient
Calories86.68 kcal90 kcal
Total Fat0.197 g0 g0%
Saturated Fatnot reported
Trans Fatnot reported
Cholesterolnot reported
Sodium1.97 mg0 mg0%
Total Carbohydrate19.5621 g20 g7%
Dietary Fiber4.334 g4 g15%
Total Sugarsnot reported
Added Sugarsnot reported
Protein1.8518 g2 g4%
Vitamin Dnot reported
Calcium33.49 mg30 mg2%
Iron0.4728 mg0.5 mg2%
Potassium388.09 mg390 mg8%

Label declares applies the rounding rules in 21 CFR 101.9(c) to the measured amount at this serving. Select any rounding rule for the band and its citation; select a column heading to hide that column.

Showing Edible, 197 grams. 90 calories.

Insights

Every figure below has a formula — select any heading to see it. These are properties of the ingredient, so they do not move with serving size: 2% of red onion, raw’s calories come from fat whether you weigh out RACC or Edible.

These are descriptive ratios, not nutrient content claims. A claim such as “good source of calcium” or “high protein” is evaluated per RACC serving under 21 CFR 101.54 — a different calculation, on a different basis, which this page does not make.
2.1 g
8.5%
2.0%
90.3%
0.44 kcal/g
7.73 g
4.51
0.01
0.41

Where every number on this page came from

Three versioned inputs. If any changes, the page is rebuilt and the build id below changes with it.

Composition
USDA FoodData Central
FDC 790577 · Foundation · released 2026-04-30
Rounding & %DV
FDA 21 CFR 101.9
§ 101.9(c), § 101.9(d)(7) · eCFR snapshot 2026-02-12
Read on eCFR →
Naming & ratios
BetterMenu enrichment
8 aliases · 9 ratios
Page built from bundle v1.3.0 · Aug 26, 2026 · commit 7fdde67
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Daily Values shown are for adults and children 4 years and older. This page reports published composition data for a reference food — it is not an analysis of your formulation, and it is not a substitute for one.

For informational purposes only; verify against 21 CFR 101.9.